CAJ | 학술논문

城市污水处理厂产生的剩余污泥中含有大量未稳定的致病微生物和一些有毒有害物质,污泥的处理处置问题已经得到广泛关注.微波具有高效加热的特点,将其应用到污泥处理处置技术上,一方面可以使污泥高效加热、水解,脱水性能和厌氧消化性能得到改善;另一方面,微波处理技术不需要投加任何化学药剂,不会向污泥中带入新的污染或对微生物有毒的物质,使后续处理效率更高.结合当前国内外污泥处理处置的概况,本文介绍了当前国内外微波处理污泥技术的一些代表性研究成果,包括直接利用微波在隔绝空气条件下热解污泥,获取气态、液态燃料产品,利用微波的高效加热作用破解污泥胞外物质和细胞壁,改善污泥可生化性能促进污泥厌氧消化、将微波与其他物理、化学方法联合运用处理污泥;并对微波法处理污泥的发展前景当前提出了自己的见解.
성시오수처리엄산생적잉여오니중함유대량미은정적치병미생물화일사유독유해물질,오니적처리처치문제이경득도엄범관주.미파구유고효가열적특점,장기응용도오니처리처치기술상,일방면가이사오니고효가열、수해,탈수성능화염양소화성능득도개선;령일방면,미파처리기술불수요투가임하화학약제,불회향오니중대입신적오염혹대미생물유독적물질,사후속처리효솔경고.결합당전국내외오니처리처치적개황,본문개소료당전국내외미파처리오니기술적일사대표성연구성과,포괄직접이용미파재격절공기조건하열해오니,획취기태、액태연료산품,이용미파적고효가열작용파해오니포외물질화세포벽,개선오니가생화성능촉진오니염양소화、장미파여기타물리、화학방법연합운용처리오니;병대미파법처리오니적발전전경당전제출료자기적견해.
The sewage sludge produced by municipal wastewater treatment plants contains a large number of unstabilized pathogenic microbes and other toxic and harmful substances.The sludge treatment and disposal is a widely concerned problem.This paper reviews the current state of the treatment and disposal for sewage sludge both at home and abroad.The technology of sludge treatment using microwave is discussed.Microwave is a high-efficiency heating technique,its use for sludge treatment and disposal can make quick sludge heating and hydrolysis,that will improve the sludge dewatering and anaerobic digestion capabihty.On the other hand,the microwave treatment technology does not involve any chemical agents and will not introduce any new pollutants or toxic substances into the sludge,therefore,will make the subsequent processing more efficient.Some representative sludge treatment technologies with microwave are analyzed,including the pyrolysis of sewage sludge by direct microwave heating to keep out of the air and to obtain gas,liquid fuel products;the disruption of sludge cell wall and extracellular substance using microwave heating to improve the biodegradability of sludge for anaerobic digestion;and the treatment of sludge by microwave together with other physical or chemical methods.The principles of these technologies are focused,and some proposals for the future research and development of the sewage sludge treatment using microwave are suggested.